A Sinbearer is a specialized Lainedoll unit.
Among other specialized functions, Sinbearers such as Sister Faustine bear the memory of a chosen subject, but its specific purpose for doing so is not disclosed.
Sinbearers are observed to be susceptible to expressing physical symptoms of the Entropic Degeneration Syndrome, but do not appear to fully succumb to it, due to their advanced self-repair functions.